Does anyone use a car battery for wfp, without a splitter? I'm thinking of getting one next as my leisure batteries failing and for half as much I could get a fiesta battery with twice the amperes for half the price, but I've heard as they are made for being constantly charged ie when in use and not flattened and charged, so not suitable.If its ok only other problem is the size as its bigger than the slot my trolleys built for but think a ratchet will sort me